Gun attachment.



R. M. WILLIAMS.-

GUN ATTACHMENT.

APPLICATION FILED JULY 2. I911.

1,266,087.' V Patented May 14, 1918.

will also adjust the removable en mcmn m. wmtmms, or SHAWNEE, OKLAHOMA.

GUN Ar'mcnnnnr.

Specification of Letters Patent.

Patented May 14. 1918.

Application filed July 2, 1917. Serial No. 178,1,46.

have invented certain new and useful Improvements in Gun Attachments, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention has for its principal object the production of a devlce used for lengthenin the barrels of short construction for acilitating greater accuracy in longer shots. I Another object'of this invention is the production of a gun attachment wherein a choke or cylindrical bore end is removably mounted upon a short gun barrel for increasing the accuracy of a. shot at a longer distance.

A still further object of this invention is the production of a gun attachment wherein simple and eflicient locking means is used for positively holdin the removable end from being accidenta y moved.

A still further object of'this invention is the production of a gun attachment wherein the locking means used for holding the removable end from accidental displacement so as to positively and accurately aline the sights.

With these and other objects in View, this invention consists of ,certam novel combinations, constructions and arrangements of parts as be hereinafter fully described and claimed.

In the accompany g drawing:

Figure 1 is a side elevation o the tachinent, showing the same in conditlon for use.

Fig. 2'is a side elevation of the attachment and lock.

Fig. 3 is a bottom plan view of the device.

Fig. 4 is a longitudinal section through the device. j

Fig.6 is a fragmentary side) elevation of the end of the gun barrel showing a portion of the lock carried thereby.

Fig. 6 is a section taken on the line 6f-6 of Fig. 2.

Fig. 7 is a section taken on the line 7-7 of Fig. 2.

' ig. 8 is a front elevation of the/gun attachment. p

provide an even bore and inner barrel or being Fig. 9 is a detail perspective view of the locking bar.

Fig. 10 is a fragmentary sectional view through a slightly modified form of the device.

Fig. 11 is a fragmentary sectional View taken at right angles to Fig. 10.

Referrin to the accompanying drawing by numera s, it will be seen that the device 1s used in combination with an ordinary gun as illustrated in general at 1. It is, of course, obvious that if so desired a gun may be provided with an ordinary sight 2. The barrel 3' of the gun 1 may be of any desired length and is provided with a reduced portion 4 which portion 4 is externally threaded as shown at 5 in Fig. 5. When only ordinary shooting is done with the gun or when targets within a medium or close range are fired at, the removable end is not employed. When, however, targets at a greater distance are fired at," the removable end which, of course, may be of any desired length, is then mounted upon the barrel 3. In order to accomplish this function, the removable end 6 ishollowed out and internally threaded as indicated at 7 adjacent its inner end. This hollowed out portion is large enough to receive the externally threaded ortion of the barrel 3 as shown clearly in ig. 4 whereby the removable end will be carried upon the end of the gun barrel 3. It is, of course, obvious that it is absolutely necessary to surfaces for the gun barrel and the removable end for permitting the charge to pass freely through the barrel and the' removable end without being deflected or caused to lodge at the unction of the barrel and removable end. It will further be seen that the removable end 6 is provided with a sight 8 adjacent itsouter portion.

In order to hold the removable end from being accidentally displaced or becoming loose after the gun has been fired a few times, there is provided a lock as will be hereinafter described. A pair of lugs 9 are fixedly mounted upon the gun barrel 3 adjacent the reduced portion thereof and these lugs may be retained in any desired manner such for instance, as being screwed upon the shrunk, welded or annealed thereon so as to be permanently retained in a set position spaced from each other as shown in Fig. 3. p A locking bar 10 is subpivot pin 13 to ass t needed? stantially rectangular in cross section and is indicated as clearly shown in Fig. 9 and has a thickened journal 11 at one end through which extends an opening 12..- This journal 11 fits between the in s 9 so as to permit the ough the opening 12 and be carried y- -thelugs supporting the 1 bar. V

A one-piece lug 14 1s shrunk or otherwise secured upon the removable end 6 at a distance from the internally threadedportion 7 of the removable end portion, the lug 14 will have a firm support since it is carried upon the thickest part of the removable end- 6 as shown in Fig. 4. This legitl is provided with a rectaar notehjlS as shown clearly in Fig. 'Lthis notchbeing substantially the same size as the lock bar so as to fit snugly upon the locking bar when the.

same is moved thereinto.

A threaded neck 16 progects from; the rec.

tangular body 10 of the. locking bar so tocarry the nut TlTjwhen the lock'is'fin opera tion for positively holding the .bar en gagement with. the lug. '14.

When it is desi ed targets at a great distance, the remevableeenn shown in Figs. 1 and t inclusive. After the removable end has "been removed'atoacits Got? rect position,- the locking bar wpivotally mounted upon the lugs 9,- isthen?swnng* to.

the sights2 and 8 are inwalinenient with'each other when the=lock is inia lockedposition, it is absolutely necessary for "the end itobe turnedso as to have the sights in alinemeut before, thesquared or rectangular locking bar'can pass into the notch, of the lug 1a.

. Of course, it is not necessary for the opera-.-

-tor to- .aline the sights forthe sights are --automatioally alined by the i f removable end to's'uch a position as will al-- low the locking bar to be moved into the {notch of the lug 14.. The nut-"17 is then H of screwed on to the exter'all threaded neck 16 until the nut actiono'f the nut willpositively hold I the 1 locking bar against accidental displacement and therefore the locking bar in turn will hold the removable end from becoming lo ose 'or accidentally disengaging the barrel 3 of the gun since the lock will hold the attachment against rotating. Furthermore. since the locking bar and nut connect the lugs 14 of the barrel and the removable end, considerable strain or stress caused by the. char e tion of the gun barrel and the hollowed out portion of the removable end.

By referringto Figs. 10 and seen that a removable end 6' 'is provided 9.:Eor pivotally wsh ot eeimeu the:

y upon the lug "148.8 shown in Figs. 'lto linclusive. This similarly to the preferred form and it isnot therefore, deemed necessary to show the pivotal mounting of the looking bar. The looking bar 18 in this modified form 1s substantially cylindrical of the same size ad acent its free end and is provided with externally threaded ends adjacent its ends. The nut 20 mounted upon the free end of the locking bar 18 is provided with a frustoconical portion 21 as shownclearly in Fig. 10. After the removable end 6 is mounted upon the barrel in the usual manner and the locking bar into the notch of the lug 14 the'nut 20 is secured on to the locking bar a to cause the frusto-conical portion topassslightly into the notch 15' or the lug '14 which; action will not only hold the lockinlgiba- 18in a set position,- butowing to --the frustof conical= construction ot a portion eras-ma, the nut will urge the lug id in the gun. The form is substanoperation of the Operation of this modified ti lly.=-identi al with th reiierred-i rin eXce tin insteadso'f havin 'is secured on to the end of JthebarrelfS as" p gel g rectangular notch of the luga'ior automati- .'cally 'alining isi'used whlch *lu "ifor'acausing the sights to be automatipass into the notch ltibftheylugjfld.carried,1ea% upon the-removable end '6. It is obviousthat 'tbe-ilockingbar rectan' ar. andfitting in a From the. foregoing l'operatorioffthe-"gun to hit a target by 'in-' creased mmey occasioned by positioning the i'ei novable end upon the barrel, 'vvhi'lefsimple and eficient' locking means has been prozivided for holding the removable endi fromacoidentally becoming loose, which loo. means when being-1 secured for holdjing the removable end against tmovement willaautomaftically cause'the sights of the gun to be alined 'WhatLis-ciaimed is:

1-. in a gun attachment scribed, the combination poi a gun having a barrel, a removable and positioned upon v description, at will be een "that a very 'eflicient. gun attachment; hasbe'enprovided which enable the of the class de- '2 theend oft saitl'bari'el, lugscarniedby said barrel-and said removable end, a locking bar pivotally mounted upon a n ty o said lugs, said bar beingwadapted'to be moved nto engagement'awith the r ing lug, and a nut carried upon said lockingbar and enga :said'last mentioned lug for holding the be hel'dagainst accidental displacement.

coking bar i n.'a set "position whereby said removable end will passing through the removable ends, will e relieved from the threads of the reduced por- 2. In a gun-attachment of the class described, the combination ofa having 7 a barrel, a removable end positioned upon 11,- it will be said barrel, said gun and saidend having sights, a pair of lugs fixedly mounted upon 1% Gji said barrel, a lug fixedly mounted upon said removable end, said last mentioned lug havin a rectangular notch, a locking bar pivotzfily mounted upon said first mentioned lugs, said locking bar having a rectangular body, an externally threaded neck extending from said body, said bar being adapted to be swung so as to pass into the notch of said last mentioned lug whereby said sights will be automatically alined wit each other, and a nut carried upon said threaded neck and bearing upon said last mentioned lug for holdin said locking bar against accidental disp acement, thereby holding said removable end from accidental movement.

3. In a gun attachment of the class described, the combinationof a locking bar having a threaded end, said locking bar being adapted to be supported upon a gun barrel, a lu having a notch'formed therein,

said lug belng adapted to be carried upon a removable end, a nut threaded upon said locking bar, said nut having a frusto-ooni cal portion, said frusto-conical portion being adapted to slightly pass into saidlug for alining the sights of the gun and the removable end.

4. In a gun attachment of the class described, the combination, of gun having a barrel, a removable end positioned upon 'said barrel, said gun and end having sights,

a locking bar pivotally mounted upon said barrel, a retaming means mounted upon said end and a nut adjustably mounted upon said bar and engaging said means for holdin bar in a set position, whereby said end will be held against accidental displacement.

5. In a gun attachment of the class described, the combination of a gun having -scribed, the combination of a a barrel, a removable end engaging said barrel, said and end having sights, a pair of lugs edly mounted upon said her rel, a In fixedly mounted upon said removable end, said last-mentioned lug having a rectangular notch, a locking bar pivotally mounted upon said first mentioned lugs, said locking bar having a rectangular body, said bar being adapted to be swung so as to pass into the notch of said last mentioned lug, whereby said sights will be alined with each other, and means for bolding said bar in engagement with saidlastmentioned lug, whereby said removable end will be held against accidental movement.

6., In a gun attachment of the class degun having a barrel, a removable end positioned upon the end of said barrel, a locln'ng bar pivotally mounted upon said barrel, a lug carried by said end, said lug having a notch formed therein, said bar fitting snugly within said notch,means for holding said bar in engagement with said lug whereby said removable end will be held against accidental movement in any direction.

3, ln a gun attachment of the class described, the combination of a gun having a barrel, a removable end positioned upon the end of said barrel, a locking bar pivotally mounted upon said barrel, a lug carried by said end, said In having a notch formed therein, said her tting snugly within said notch, whereby said remova le end will be held from twisting upon said barrel, and a nut mounted upon said bar and bea upon said lu for holding said bar from accidentally ngaging said lug.

In testimony whereof I hereunto aifix my signature.

RICHARD M. 

